Southern California -- this just in

Foothill areas north of Los Angeles are under a flash flood watch as another winter storm approaches, threatening burn areas with more mudslides and prompting mandatory evacuations for hundreds of homes.

Showers and thunderstorms are expected to drop between 1/3 of an inch to 2 inches of rain starting Tuesday afternoon through Tuesday night, said forecasters with the National Weather Service in Oxnard. Though the storm will be patchy and "showery," forecasters said it could dump more than a half-inch of rain an hour in some areas.